Milwaukee MI 406 User Manual

USER MANUAL

MI 406

Free Chlorine Meter

Dear Custom er ,
Thank you for choosing a Martini product.
This manual will provide you with the
nec essar y inf ormat ion for the c orrect use of
the instrument.
Please read it carefully before using the
meter. This ins trument is in comp liance with

directives.

SPECIFICATIONS:

Range 0.00 to 5.00 mg/L Cl2
Resolution 0.01 mg/L (0.00-3.50 mg/L);

0.10 mg/L (above 3.50 mg/L)

Precision ±0.04 mg/L @ 1.50 mg/L
Light Source Tungsten lamp
Light Detector Silicon Photocell and

525 nm narrow band interference filter

Method Adaption of the USEPA method 330.5 and Standard Method 4500-Cl G.
Environment 0 to 50°C (32 to 122°F);

100% RH max.

Battery Typ e 1 x 9 volt
Auto-Shut off After 10' of non-use
Dimensions 192 x 104 x 52 mm

(7. 5 x 4.1 x 2” )
Weight 380 g

MEASUREMENT PROCEDURE:

1• Turn the meter on by pressing

ON/OFF.

2• When the LCD displays “- - -”, the

meter is ready.

3• Fill the cuvet with 10

mL of sample, up to the
mark, and replace the
cap.

4• Place the cuvet into the

holder and ensure that
the notch on the cap is
positioned securely into
the groove.

5• Press ZERO and “SIP”

will blink on the display.

6• Aft er a few secon ds the

display will show “-0.0­”. The meter is now
zeroed and ready for
measurement.

7• Remove the cuvet. Open it.
8• Add 3 drops of DPD 1 indicator and

3 drops of D PD 2 b uff er to an empt y
cuvet. Immediately add 10 mL of
unrea cted sam ple. Replace the cap
and shake gently.

9• Replace the cuvet into the holder

and ensure that the notch on the cap
is positioned securely into the
groove.

10• Press READ and “SIP”

will blink during
measurement.

11• The instrument directly

displays the
concentration in mg/L of free
chlorine.

Interferences

• Positive error:

- Bromine

- Chlorine Dioxide

- Iodine

- Oxidized Manganese and
Chromium

- Ozone

• Alkalinity above 250 mg/L CaCO3 or
acidity above 150 mg/L CaCO3 will
not reliably d evelop th e full amo unt
of color or it may rapidly f ade.

To resolve this, neutralize the
sample with dil uted HCl or NaOH.

• In case of water with hardness
greater than 500 mg/L CaCO3,
shak e the sam ple for approximately
2’ after adding the powder reagent.

GUIDE TO DISPLAY CODES:

This prompt appears for 1 second each
time the in s trum ent is turned on.

The dashes “- - -”
indicates that the
meter is in a ready
state and zeroing can
be performed.

Sampling In Progress.
Flashing “SIP” prompt
appears each time the
met er is perf orming a
measurement.

“-0.0-”, the m eter i s in
a zeroed state and
measurement can be
performed.

The blinking "BAT"
indicates that the
battery voltage is
getting low and the
battery needs to be
replaced.

“-bA-”, the battery is
dead and must be
replaced. Once this
indication is displayed,
the m eter will l ock up.
Change the battery
and restart the meter.

“Conf”, the meter has
lost its configuration. Contact your
dealer or the n earest Marti ni Customer
Service Cen ter.

ERROR MESSAGES

On zero reading

• Blinking “-0.0-” indicates that the
zeroing procedure failed due to a low
signalto-noise ratio.
In this case
press ZERO again.

• “no L”, the
instrument can not
adjust the light
level . Pl eas e check
that the sample
does not contain
any debris.

• “L Lo”, there is
not enough lig ht to
perform a
measurement.
Please check the
preparation of the
zero cuvet.

• “L H i”, there is t oo
much light to
perform a
measurement.
Please check the prepa ration of the zero
cuvet.

On sam ple readin g

• “-SA-”, t her e i s t oo
much light for the
sample
measurement.
Please check if the
rig ht sample cuv et is
inserted.

• “Inv”, the sample
and the zero cuvet
are i nvert ed.

• “ZErO”, a zero
reading was not

taken. Follow the instruction in the
measurement procedure for zeroing the
meter.

• Under range. A blinking “0.00”
indi cates th at the sample absor bs less
light than the zero
reference.
Check the procedure
and make sure you
use the same cuvet
for reference (zero)
and measurement.

• A fl ashing val ue of
the maximum
concentration
indicates an over
range condition.
The concentration of
the sampl e i s bey o nd
the programmed range: dilute the
sample and re-run the test.

BATTERY REPLACEMENT

Battery replacement must only take
place in a non-hazardous environment.
Simply rotate the battery cover on the
back of the meter.
Detach the
battery from
the terminals
and attach a
fresh 9V
battery while
paying
attention to
the correct
polarity.
Insert the battery and replace the cover.

ACCESSORIES:

MI506-100 Free Chlo rine (100 tests)
MI0001 Glass cuvets (2 pcs)
MI0002 Caps for cuvets (2 pcs)
MI0003 Stoppers for cuvets (2 pcs)
MI0004 Tissue for wipping cuvets

(4 pcs)
MI0005 9V battery (1 pc)

WARRANTY

This instr ument is w arranted against def ects
in materials and man ufact uri ng for a period of
two years from the date of purchase.
If during t his p eriod th e rep air or r eplac emen t
of parts is req uired, w here th e damag e is not
due to neg ligenc e or erroneou s oper ation by
the user, please
return the meter to either distributor or our
office in the or iginal packing and t he repair
will be fre e of charge.